1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CONTENT_PUBLIC_BROWSER_BROWSER_CHILD_PROCESS_HOST_H_ 6 #define CONTENT_PUBLIC_BROWSER_BROWSER_CHILD_PROCESS_HOST_H_ 7 8 #include "base/environment.h" 9 #include "base/process/kill.h" 10 #include "base/process/process_handle.h" 11 #include "base/process/process_metrics.h" 12 #include "base/strings/string16.h" 13 #include "build/build_config.h" 14 #include "content/common/content_export.h" 15 #include "content/public/common/process_type.h" 16 #include "ipc/ipc_sender.h" 17 18 class CommandLine; 19 20 namespace base { 21 class FilePath; 22 } 23 24 namespace content { 25 26 class BrowserChildProcessHostDelegate; 27 class ChildProcessHost; 28 class SandboxedProcessLauncherDelegate; 29 struct ChildProcessData; 30 31 // This represents child processes of the browser process, i.e. plugins. They 32 // will get terminated at browser shutdown. 33 class CONTENT_EXPORT BrowserChildProcessHost : public IPC::Sender { 34 public: 35 // Used to create a child process host. The delegate must outlive this object. 36 // |process_type| needs to be either an enum value from ProcessType or an 37 // embedder-defined value. 38 static BrowserChildProcessHost* Create( 39 int process_type, 40 BrowserChildProcessHostDelegate* delegate); 41 ~BrowserChildProcessHost()42 virtual ~BrowserChildProcessHost() {} 43 44 // Derived classes call this to launch the child process asynchronously. 45 // Takes ownership of |cmd_line| and |delegate|. 46 virtual void Launch( 47 #if defined(OS_WIN) 48 SandboxedProcessLauncherDelegate* delegate, 49 #elif defined(OS_POSIX) 50 bool use_zygote, 51 const base::EnvironmentMap& environ, 52 #endif 53 CommandLine* cmd_line) = 0; 54 55 virtual const ChildProcessData& GetData() const = 0; 56 57 // Returns the ChildProcessHost object used by this object. 58 virtual ChildProcessHost* GetHost() const = 0; 59 60 // Returns the termination status of a child. |exit_code| is the 61 // status returned when the process exited (for posix, as returned 62 // from waitpid(), for Windows, as returned from 63 // GetExitCodeProcess()). |exit_code| may be NULL. 64 // |known_dead| indicates that the child is already dead. On Linux, this 65 // information is necessary to retrieve accurate information. See 66 // ChildProcessLauncher::GetChildTerminationStatus() for more details. 67 virtual base::TerminationStatus GetTerminationStatus( 68 bool known_dead, int* exit_code) = 0; 69 70 // Sets the user-visible name of the process. 71 virtual void SetName(const base::string16& name) = 0; 72 73 // Set the handle of the process. BrowserChildProcessHost will do this when 74 // the Launch method is used to start the process. However if the owner 75 // of this object doesn't call Launch and starts the process in another way, 76 // they need to call this method so that the process handle is associated with 77 // this object. 78 virtual void SetHandle(base::ProcessHandle handle) = 0; 79 80 #if defined(OS_MACOSX) && !defined(OS_IOS) 81 // Returns a PortProvider used to get process metrics for child processes. 82 static base::ProcessMetrics::PortProvider* GetPortProvider(); 83 #endif 84 }; 85 86 }; // namespace content 87 88 #endif // CONTENT_PUBLIC_BROWSER_BROWSER_CHILD_PROCESS_HOST_H_ 89